Forums/Z31P/z31-performance-upgrade-forums engine-management/nistuned ecu injector drivers

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drb5721: (2013-12-17 00:01:18)

I just got my nistune setup today from buffer. Its apparently is a 88 turbo ecu. I am going to be using it in an '87 with dsm 450cc injectors. Mine uses low impedence injectors from factory, and I believe the 88-89 use high impedence if I am not mistaken. I still have to see if the 450's are high impedence or low so ill know if I have to wire in resistors or not. The nistune board and software changes nothing with the injector drivers, correct?

G-E: (2013-12-17 00:09:58)

DSM uses low-imp so yes you will need resistors

Augustus Maximus: (2013-12-17 06:27:13)

Nope the lower current transistors are built into the ECU. Ssdly inserting a resistor into the current path of a lo Z circuit is not without tradeoff.

RedDemon: (2013-12-17 19:38:51)

You should make a resistor harness instead of cutting and splicing the stock one.

I have an 88 NIStune ECU and using 780cc low imp. injectors. I had a spare fried ECU and used the female socket off of the ECU to make the resistor harness. This way, if I ever change ECU's or use a friends ECU to check something (which I had to do), I can just remove the harness.